question about teeth and mating

[M_free]

good evening to all! It is two days that I sink on a toothed wheel. I expose the problem.. .
I have a pdf in which a toothed wheel is designed: module, measurements of the various circumferences, bending of the tooth arch (you know better than me instead of the evolved one approaches a curve), thickness of a tooth(which in theory should be measured on the primitive but from the sheet you do not understand well).
the problem is: is the curvature of the bow on both the coast and on the side or the lower part of the tooth descends straight with thickness 5,6)? the method of....(I miss the name) gives a table that according to the teeth and m makes 2 rays of curvature one for the coast and one for the tooth.
Besides, once the construction of the toothed wheel is finished if I want to ungrain it and assemble it with another, what are the constraints that you put on? It doesn't make me impose constraints on the distance of the axes.... thank you very much I wait for answers

ps:use solidworks 2011 and the pdf incriminated is a toothed wheel for a wooden pendulum watch found online (I hope I can write it) on the woodenclock site

 

[Ivan1990]

good evening to all! It is two days that I sink on a toothed wheel. I expose the problem.. .
I have a pdf in which a toothed wheel is designed: module, measurements of the various circumferences, bending of the tooth arch (you know better than me instead of the evolved one approaches a curve), thickness of a tooth(which in theory should be measured on the primitive but from the sheet you do not understand well).
the problem is: is the curvature of the bow on both the coast and on the side or the lower part of the tooth descends straight with thickness 5,6)? the method of....(I miss the name) gives a table that according to the teeth and m makes 2 rays of curvature one for the coast and one for the tooth.
Besides, once the construction of the toothed wheel is finished if I want to ungrain it and assemble it with another, what are the constraints that you put on? It doesn't make me impose constraints on the distance of the axes.... thank you very much I wait for answers

ps:use solidworks 2011 and the pdf incriminated is a toothed wheel for a wooden pendulum watch found online (I hope I can write it) on the woodenclock site

In particular, tooth wheels builders only serve data such as module, tooth number etc.... So in my opinion, since even the coupling you have to use does not require teeth but primitive diameters, or ratio, or rack stroke per lap, you can make an approximate tooth (which makes a graphic sense idea), even in the solidworks libraries in the toolbox there are dense wheels, the couplings you have to use are found in mechanical couplings, the name is gear or rack system.

 

[otxboc]

I don't understand what you mean, it could be semitopping or a k profile, not always the tooth is all evolving

 

[M_free]

Excuse me so much, I forgot to say a very important detail, I am an engineering student and I do not have to send the design to a manufacturer but only to make on solidworks the individual pieces and to carry out the assembly of the axieme( is a cad examination).
the profile is that of an evolving approximate to a circle arc however only the curvature radius of the upper part is given (between the circus. primitive and the head) of the tooth, while the lower part (from the primitive to the foot) I think it descends down with constant thickness.my question is if it is possible that it is so (since from the drawing you understand little)

the second question concerns the coupling of 2 toothed wheels that the help function says to go on maths>gear> and select the axes, unfortunately it makes me select only the axis of one wheel. why?
Thank you very much

 

[re_solidworks]

to couple two dentate wheels you should have the two axes at correct distance (interasse) that support them together, from a concentricity to each wheel on your axis, then with 2 couplings of coincidence or fixed distance the axial translation and at this point you only have to "make" the rotations. to do this you just go to mechanical couplings, select the coupling gear and give the right ratio. When you click the swx diameters, it offers you the ratio of selected diameters, but you can overwrite it with what you need.

 

[otxboc]

It is very difficult that a tooth after the primitive proceeds with a "right line" because having the coupling a bad relationship of conduct would risk not to make the tooth sucessive to the one in socket. normally straight lines before the evolving are made between the diameter of head and the first tract of evilvent and the tract is called semitopping, but of course the gears in that tract do not lead. you have to check in the calculation of your teeth the evolving portion used for crawling, which is the one that needs to be traced back to a bow in your case, and before and after you can download it to allow the ingrain.

 

[M_free]

to couple two dentate wheels you should have the two axes at correct distance (interasse) that support them together, from a concentricity to each wheel on your axis, then with 2 couplings of coincidence or fixed distance the axial translation and at this point you only have to "make" the rotations. to do this you just go to mechanical couplings, select the coupling gear and give the right ratio. When you click the swx diameters, it offers you the ratio of selected diameters, but you can overwrite it with what you need.

thank you so much trying and retrying I managed the error was this, if in the assembly I created the axes using as surface the cylinder of the central hole of the center wheel then it didn't make me select them together to insert a report distance known; instead if I use as aces those created during the creation of part it makes me insert the relationship! Why?
How do I now fix the dentate wheels axles and try to rotate one of them? ...I am sorry for the infinite questions I ask but regarding the creation of part the professor has dedicated many lessons while for the creation of together only one (to which perhaps I was not even very careful thank you still infinitely:smile:

 

[M_free]

It is very difficult that a tooth after the primitive proceeds with a "right line" because having the coupling a bad relationship of conduct would risk not to make the tooth sucessive to the one in socket. normally straight lines before the evolving are made between the diameter of head and the first tract of evilvent and the tract is called semitopping, but of course the gears in that tract do not lead. you have to check in the calculation of your teeth the evolving portion used for crawling, which is the one that needs to be traced back to a bow in your case, and before and after you can download it to allow the ingrain.

first of all thanks for the answer, unfortunately I have not known and I have not managed to find the formula for the calculation of the evolving portion used for crawling; my problem is this: being known the module(4) I can identify the step that turns out 4π( measured on the primitive circumference), the design also tells me that the thickness of the tooth is 5,6 (usually measured on the primitive here seems measured on the base circumference but the design does not have a great resolution, I consider it on the primitive) so the compartment is 6,96637. .disegnandolo thus using a connection between tooth and circumference of foot according to the formula (found in net) r=0,2*m the tooth comes with a thickness measured on the circuit of foot lower than that measured on the primitive circuit (in the design this does not seem at all)....a tooth so does not have a great resistance to bending)...the only thing I can think is that the formula of the chord is evolved and

 

[M_free]

to couple two dentate wheels you should have the two axes at correct distance (interasse) that support them together, from a concentricity to each wheel on your axis, then with 2 couplings of coincidence or fixed distance the axial translation and at this point you only have to "make" the rotations. to do this you just go to mechanical couplings, select the coupling gear and give the right ratio. When you click the swx diameters, it offers you the ratio of selected diameters, but you can overwrite it with what you need.

Sorry the message before, I had no clear things, I managed in motion study to create the movement by entering the correct relationships.for now thank you so much!! ! ! ! ! ! !

 

[otxboc]

attached a calculation for a m4 z25 ap20 to interasse 100, correction xm 0.

you can notice the diameters of the contact points where the evolver must be present that you must assimilate to a curve.

if you need more info let me know

 

[M_free]

thank you so much!I managed to correct the profile!!!(ps:also thanks to a user who lives in my country who came to give me hand).thank you again, now a question of assembly.
If for example I have a tree on which two toothed wheels are cast if I move into motion environment and I stick a rotation to one of the dentate wheels the other does not turn me because I have no relationship of solidity between the pieces but only of positioning. how do you proceed to make it turn everything, tree and wheels?thank you again!

 

[M_free]

please, help...:smile:

 

[Ivan1990]

thank you so much!I managed to correct the profile!!!(ps:also thanks to a user who lives in my country who came to give me hand).thank you again, now a question of assembly.
If for example I have a tree on which two toothed wheels are cast if I move into motion environment and I stick a rotation to one of the dentate wheels the other does not turn me because I have no relationship of solidity between the pieces but only of positioning. how do you proceed to make it turn everything, tree and wheels?thank you again!

mechanical couplings gear, and impose it

 

[M_free]

mechanical couplings gear, and impose it

but this mating should not be for two toothed wheels that gear between them?qua, they are cast on the same tree then the transmission ratio is obligatory 1; Moreover, if I have a tree on which I have to fuck 4 dentate wheels and its spacers, how can I do to mount it doing (i.e. I put relationships) yes that in motion applying a rotation to a rough component everything?

I tried by putting coaxiality and coincidence of the faces but in motion environment does not work as a single body. And if now I use the function locks the axieme ultradefinites....:frown:

Thank you so much for your help!

 

[Ivan1990]

but this mating should not be for two toothed wheels that gear between them?qua, they are cast on the same tree then the transmission ratio is obligatory 1; Moreover, if I have a tree on which I have to fuck 4 dentate wheels and its spacers, how can I do to mount it doing (i.e. I put relationships) yes that in motion applying a rotation to a rough component everything?

I tried by putting coaxiality and coincidence of the faces but in motion environment does not work as a single body. And if now I use the function locks the axieme ultradefinites....:frown:

Thank you so much for your help!

Sorry I didn't understand. If the wheels are mounted on a tree, I presume to convey the bike use key or tongue... so if you take the two wheels, put them concentric to the tree then make pairs between tab and seats should move both wheels by turning 1 component.

p.s. if you want something fast do a pair of parallelism between the original plans of the 3 components.

 

[M_free]

Sorry I didn't understand. If the wheels are mounted on a tree, I presume to convey the bike use key or tongue... so if you take the two wheels, put them concentric to the tree then make pairs between tab and seats should move both wheels by turning 1 component.

p.s. if you want something fast do a pair of parallelism between the original plans of the 3 components.

quiet, is the transmission not through a key or a tongue should be the force of the hub on the tree, but being of the same diameter (from the project) it is possible to add the force for which I have to act differently....if I used the couplings of coaxiality and parallelism of the planes only as positioning and then blocking the whole works (that is, not of the errors of ultradefined)? Thanks again

 

[Ivan1990]

quiet, is the transmission not through a key or a tongue should be the force of the hub on the tree, but being of the same diameter (from the project) it is possible to add the force for which I have to act differently....if I used the couplings of coaxiality and parallelism of the planes only as positioning and then blocking the whole works (that is, not of the errors of ultradefined)? Thanks again

I don't know what constraints you put... in theory if right constraints should move everything together without ultradefinite. . I don't even know what fixed component you have.
if you hold a fixed component that does not rotate but on which the tree rotates, make a concentric coupling between the tree and the fixed component, also concentric the gears dentate to the tree, then create a parallelism or a coincidence between 1 plane of the shaft with 1 plane per toothed wheel. with this coupling system should work.

 

[M_free]

I don't know what constraints you put... in theory if right constraints should move everything together without ultradefinite. . I don't even know what fixed component you have.
if you hold a fixed component that does not rotate but on which the tree rotates, make a concentric coupling between the tree and the fixed component, also concentric the gears dentate to the tree, then create a parallelism or a coincidence between 1 plane of the shaft with 1 plane per toothed wheel. with this coupling system should work.

thank you so much....I did everything and now it works!but it is a labyrinth full of problems:frown:....I calettato on the plate the second tree I put mechanical coupling gear and I put the teeth but I don't know why it behaves strangely, trying to rotate a toothed wheel (not in the motion environment trying there in the assembly) the second wheel properly for a while after that they turn in opposite! !I think I'm wrong in the many reports that maybe come into conflict despite I have some pdfs with some examples I can't understand them well....=(

 

[M_free]

Trying and retrying I think I have understood what the problem is... is the block bond that applied to a component that is bound with other relationships from problems...so my question is reduced to: "how do you block 2 make a forced assembly of hub on tree if they have equal diameters?(specifically this because in the help I found the case where the coupling is with interference)"
Thank you.
Mysteries

 

[Ivan1990]

thank you so much....I did everything and now it works!but it is a labyrinth full of problems:frown:....I calettato on the plate the second tree I put mechanical coupling gear and I put the teeth but I don't know why it behaves strangely, trying to rotate a toothed wheel (not in the motion environment trying there in the assembly) the second wheel properly for a while after that they turn in opposite! !I think I'm wrong in the many reports that maybe come into conflict despite I have some pdfs with some examples I can't understand them well....=(

Maybe you need help... (if you want to try posting the file, I try to bind it right)